.session-startup{min-height:100vh;min-height:100dvh;display:grid;place-items:center;padding:28px;box-sizing:border-box;background:#f7f9fb;color:#10243a;text-align:center}
.session-startup>div{max-width:520px}
.session-startup h1{font-size:clamp(1.5rem,4vw,2.1rem);line-height:1.3}
.session-startup #sessionStatus{color:#466078;line-height:1.6}
.session-startup button{max-width:240px;margin:18px auto 0}